Specifications of Dymo 25mm x 54mm Labels: Specification Details Label Size 25 × 54 mm (1″ × 2⅛″) Labels per Roll 500 Rolls per Pack 1 (each roll contains 500 labels) Label Material Direct-thermal coated paper (top-coated for print) Label Color White Backing (liner) Paper release liner (silicone-coated) – standard for direct-thermal labels Core Diameter 1 inch (≈25.4 mm) Adhesive Permanent acrylic (strong adhesive) Print Technology Direct Thermal (no ink or toner) Operating Temp. –18 °C to 25 °C (ambient) (paper labels; durable plastic labels rated up to 50 °C) Storage Temp. ~0 °C to 50 °C (ambient, ambient storage of paper thermal) Certifications RoHS compliant; FSC certified Dymo 25mm x 54mm Labels Compatible Printers These Dymo 25mm x 54mm Labels are compatible with most Dymo LabelWriter series and many Seiko Smart Label printers. Official Dymo documentation lists the following compatible Dymo LabelWriter models: DYMO LabelWriter 4XL DYMO LabelWriter 5XL DYMO LabelWriter 550 Turbo DYMO LabelWriter 450 DYMO LabelWriter 450 Turbo DYMO LabelWriter 450 Duo DYMO LabelWriter 450 Twin Turbo DYMO LabelWriter 400 (and 400 Duo, 400 Turbo, 400 Twin Turbo) DYMO LabelWriter 330 (and 330 Turbo) DYMO LabelWriter 320 DYMO LabelWriter 315 DYMO LabelWriter 310 DYMO LabelWriter Wireless In addition, the following Seiko Smart Label Printer models are known to accept Dymo 25×54 mm label rolls: Seiko SLP-450 Seiko SLP-440 Seiko SLP-430 Seiko SLP-420 Seiko SLP-240 Seiko SLP-220 Seiko SLP-200 Seiko “Pro Turbo” series (e.g., SLP-4250Pro Turbo)
